Question

1) A ___ is a non-living infectious particle. The different varieties of flu viruses

are called __.
The Spanish flu outbreak occurred in ___. The
_____determines which strains of influenza virus will most
likely be those that are the most active during the flu season. An_
is a part
of the viral, coating that the immune system recognizes.
flu shots contain
antigens from three strains of flu virus.

Answer 1

Virus

Strains

1918

What is The Who’s job regarding the flu shot ?

Antigen

Step-by-step explanation: